Hello,
Thanks for your inquiry. Our license is offered on a one-year subscription basis, which allows you to receive free updates to the latest version throughout the year of your purchase. Additionally, you will retain permanent access to the versions released within that year, even after your license expires.
As for your situation, please first check the released date of the Spire.Doc version you are using. If your license expires before this date, this version will be invalid. The warning message will appear, you need to renew your license to remove it. You can learn more from
https://www.e-iceblue.com/Buy/Spire.Doc.htmlIf you have any other questions, you can email to
[email protected]. Thank you in advance.
Sincerely,
Amin
E-iceblue support team